def __init__(self, in_file=['path'], tr=1.0, **options):
from nipype.interfaces.nipy.preprocess import FmriRealign4d
realigner = FmriRealign4d()
realigner.inputs.in_file = in_file
realigner.inputs.tr = tr
for ef in options:
setattr(realigner.inputs, ef, options[ef])
self.res = realigner.run()
